Type-writer.



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APPLICATION FILED NOV. 7. 1905.

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No. 837,611. PATENTED DEC. 4, 1906.

' H. CROSS.

TYPE WRITER.

APPLIOATION FILED Nov. 7. 1905.

4 SHEETS-SHEET 3.

.f @m4 l n We) W Taffy Cross No. 837,611. PATENTED DBC. 4, 1906.

H. CROSS. I

' TYPE WRITER.

APPLICATION FILED NOV. 7. 1905.

4 SHEETS-SHEET 4.

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Y Crass UNITED STAIFJS PATENT OFFCE..

HARRY CROSS, OF WOODSTOCK, ILLINOIS, ASSIGNOR TO THE OLIVER TYPEWRITER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION or iLLiNoIs.

TYPE-WRITER.

Specification of Letters atent.

' Patented Dec. 4, 1906.-

Tor/.ZZ whom it mfr/y con/cern:

Be it known that I, HARRY C aoss, a citizen cf the United States, and a resident of Woodstock, in the county of McHenry and State of wings, and to the letters of reference marked thereon, which form a part of this specifica tion.

rihis invention relates to improvements in type-writing machines of that kind having a platen-shift mechanism or device by which the pa er-carriage is moved or shifted to bring t e platen in position to receive an impression from either one of three types carried by each of the ty e-bars. i

The improvements erein shown constituting the present invention are shown in the accompanying drawings as applied to an Oliver type-Writing machine such as is shown in the prior patent to Thomas Oliver, N o. 599,863,

dated March 1, 1898. Said improvements,

however, may also be applied to other kinds of type-writing machines of thedouble-shift type.

'T he invention consists in the matters here# mafter set forth, and more particularly pointed out in the appended claims.

' My invention may he more readily under-V stood byreference to the accompanying drawings, in which- L Figure 1 is a view in central vertical section of a type-writing machine equipped with the features constitutinr my invention. Fi 2 is a plan section ta en on a horizontal Ime above the baseplate ofthe machine with the carriage removed, showing the carriage-shift plate'in plan viewA Fig. Sis a perspective view of the b ase-plate of the machine together with the shift-frame and arts concerned in supporting and moving sald frame. Fig. 4 is a vertical section taken upon the section-line 4 4 of Fig. 2. Fig. 5 is a detail plan section taken upon line 5 5 of Fig. 4. Fig. Gis a sectional elevation taken upon line 6 6 of Fig. 4. Fig. 7 is a detail cross-section taken upon line 7 7 of Fig. 1. Fig. 8 is a detail plan section of the parts shown in Fig. 7, taken on the line 8 8 of said Fig. 7. l

First referring briefly to the general features of construction of the machine' illustrated in the accompanying drawings, A indicates the base-plate of the machine, and B the key-levers, which extend from front to rear of the machine and which are pivoted at their rear ends to the rear part of said base-- plate. Said levers are connected by links I3 with type-bars C of the form employed 1n said Oliver type-writing machine and which are mounted in two groups located at opposite sides o`f the center line of the machine. Said type-bars C carry type-heads C', each provided with three types, as is common in such machines.

E indicates the platen, which is mountedv in the paper-carriage, consisting of end plates E and longitudinal frame-pieces, one of which, E2, is provided on its front edge with the rackbar c of the carriage. The type-bars C are mounted in supporting-frames C2, which overhang the platen and carriage and are rigidly attached to supporting-standardsl) D,

.lattached at their lower ends to the base- -plate A and which are in front of the papercarriage and platen.

4F indicates as a 'Whole a shifting frame on which the paper-carriage is mounted and which is ca 'able of movement backwardly and forwardly from a central position, so that the platen may be brought under the striking-point of either of thethree sets of types on t e type-bars. Said shifting frame is provided with front and reark horizontal guidebars F FZ, on which rest the rollers c eZ on the carria e-frame. A

Gr G in icate the shift-levers for actuating the shift-frame, which are located at the left-- hand side of the machine.

H indicates a horizontal transverse rockshaft by means of which motion is transmitted from said-shift-levers to the shift.

frame. The rock-shaft H is provided with an upwardly-extending crank-arm H', which is connected With the shift-frame by means of a connecting-bar H2. Said crank-shaft is provided beneath the shift-levers G G with 'arms H3 H31, carryin a crank-pin 71 adapted to engage cam-slots ormed in camlates g g, which are attached to and depen from the shift-levers.

G2 G3 are springs which act on the shift-levers to lift the same and which tend to return the shift-frame to its central position when shifted forwardly or rearward y away from the same.

IOC

base-plate, one vertica face of which is formed lon the edge of the base-plate and the other' face fwhich is formel on a flange F8,

rising yfr a block F", which is attached to and depends from the base-plate. The guide-block F7 is vprovided with two antifricl tion-'rollers f 2 f 7, which bear against the vertical guide-surface formed by the adjacent edge of the base-plate. To permit adjustment of the width of the guideroove for the gui de-block F7., the stationary b ook F9 is'pro- Avided with a slit extending downwardly v through its upper part, and an adjustingscrew f 3 is inserted through the parts of said block at opposite sides of the slit and affords adjustment'of the ange F8 toward and from the opposite side of the guide-groove. The parts of the machine hereinbefore referred to kcorrespond enerally with the Oliver typen' writing mac ne as heretofore constructed.

Referring now to the novel features of con-- struction in the features constituting the lmeans for sulpporting the shift-frame, which constitutes t e subject-matter of the resent "invention, these parts are made as ollows:

Said'shift-frame 'F is provided near its endsv at opposite sides of the machine with forwardlyrojecting arms F3 F4, located adjacent to the' ,4.o

ame-standards D D, by which the type-barsup orting frames C2 C2 are sustained, and pre erably at the outer faces of saidstandards. Said arms are connected with the said :framestandards D D at points above the arms by means of suspension-links or hangers I I, which are connected with the said standvards 'and with the arms on the shift-frame by means of-transversely-arranged horizontal i -finthedrawings as supported and having slid forward 'position thereof;

VApivots fit .1 The links thus arranged serve .to sup` ort the forward end ofthe shift-frame, Whilae' permitting forward and backward` .movement thereof from a central lposition bythe swlnging'of the lower ends of said' links II y and backwardly from the upright I The 'rear end of the shift-frame is shown ing connection with the frame by the same means, as lshown Iin said' prior Oliven patent--l to wit,by means of av rearwardly-extending horizontal centrally-arranged guide rod or stem FF, which is rigidly attachedtothe-rearv part of the shift-frame andv slides in a standard4 J on the base-plate -of the machine, said' standardlbeing provided with asupportinglabove described said frame, with the paperjment as the/said central position t ough thel action of one or 'l ment mechanism wil yescapement mechanism, which roller J', on which said stem rests and moves in the shifting movement of -the frame. Forward-and-rearward' movement of the shiftframe is limited in. this instance, as in the machineshown in said Oliver patent, by mearls of stop-nuts f 4 f5 onV the stem F5, arranged at opposite sides of and adapted for contact with astandard J2, saidstandard being mounted on the bmase-plate of the machine and is provided with a notch through which `said stem F5 freely passes.

By reason ofthe connection ofthe forward .end of the shift-frame with the frame of the.

machine by suspension-links in the manner carriage, has a slight lrising-and-falling movearts are shifted from their the other of the shift-levers'and in view of the fact that the carriage escapement mechanism (or devices for controlling the endwise movement of the carriage on the shift-frame j under the action of the' carriage-actuating spring) is carried by said shift-frame'and operated. from the space-bar of the machine.,

I have rovided means for maintaining c onj stant re ation betweenA said universal bar and the operative partsof the escapement mechanism, so that the o eration of the escape-` i) be unaffected by such. slight rising-and-,falling movement of the Now referring to the particula devices illustrated for controlling the'moyement of the carriage from the universal bar and in the 'spond generally with those of the Oliver type-' writer as heretofore constructed, these parts` sal bar, on which all of the key-levers operate IOO parts correl are made as follows: Kindicates the univer" an'dwhich is connected by lateral arm'sK K and-'a centralfarm Kz, whichlextendfforwardly therefrom, vwith a rock-shaft K3., which y'is pivotally mounted on the forward Y' art of the base-plate' ofthe machine. 'K4 4 indi- .cate the s ace-key levers, which are connect- 'd witht e central Varm K2 of the universal ar.

The shift-frame F is rovided with-,a dependingpart F?, 0n whic isv mounted an oscillating.escapement-lever L, theforward end of which carries an escapement-pawl L adapted' for engagement' with'4 an esca ewheel vM, mounted on' an upright shaft the upper endl of which is provided with a pinion m, thaten'gages the carriage rack-bar e. The carriage lsmoved by the usual carriage-actuating spring, containedin a barrel N and which is connected with the carriage by the usual flexible connection n, Fi 2. The escapement-lever L is operated 'the universal bar K through the medium of a- .slotted yoke O, attached tothe-lower end of 1 any-upright bar Cl', which is fpivoted at its up-` per end to the rear end of the esca ementi'leverLL Said slotted yoke O has av orizontally-arranged slot o, which is engaged by means of a stud lc on the universal-bar arm K2. Through the medium of said slotted yoke O vertical movement oi' the universal bar is transmitted to the escape-lever L, while 'backward-and-forward movement oi' said lever with the shift-frame is permitted by the said slot o without affecting the action of the escape devices, as is the case in the construetionshown in said priorOliver patent. As a novel construction of the parts illustrated the said slot o is made of curved iorm and lower at its ends. than at its middle part, the curvature of the slot corresponding generally with the radius of the suspensionlinks or hangers I of the shift-frame. As a result o'l this construction thesame relation -is always maintained between the universal `oar and the escapement-lever L, 'notwithstanding the slight vertical movement given to the shift-frame through the swinging oi said suspension-links whenY the frame is shifted forwardly and rearwardly from its centralposition. In other words, the slight elevation of the shift-frame when it is moved forwardly or rearwardly from the central position is compensated for by the downward curvature of the ends of said slot 0 from the central part of said slot, which is engaged by the stud lf at the time the shift-frame is'in its central position. A

The employment of suspension-links or hangers for sustaining'the shift-frame from points on the machine-frame abovethe same when the parts are so arranged that the suspension-links or hangers in the intermediate or central position ofthe shift-frame stand at a vertical position and they movement oi said shift-frame from such central position toward either limit of: its throw has the eii'ect of slightly lifting the carriage, as described, and has the important advantage, amon f others, oi facilitating the prompt return of t 1e shifti'rame, carriage, platen, and other parts supported or carried by the shift-frame to the central o r lower-case rinting position, the weight of the arts w iich are moved in-efi'ecting thel shii't serving to aid in the return Ythereof to said central position. .The extent of lifting movement 1s so slight that the weight of the parts ail'ords no material resistance tothe operation ol' the shift-keys, which latter moves with very slight resistance at' the beginning of the movement, due to the l'act that the shift-frame moves horizontally in the initial )art of its movement, and it becomes possible to use springs 'of less strength to return the carriage, so that such s rings may he made to give less resistance to t e action of the shift-keys without decrease of their` eilectiveness in accomplishingr the prompt return oi' the shift-frame than in the case ol the construction where the platen has a horizontal movement, the prompt return of the shift-frame to its central position being thus facilitated, while the shift-keys may be more easily operated, because requiring very slight pressure to start them on their downward movement and requiring a graduallyincreased pressure of the iinger as the shitt- 'rame approaches the backward and forward limits oi its movement. The 'supporting means for the sl'iift-i'rame described has also the advantage of being very simple in its construction, of having l'ew parts, and being exceedingly durable and not likely to get ont of order.

It will of course be understood that the slight rising-and-falling movement of the platen will not have any eil'ect whatsoever on the spacing of the letters in printing, the impact of the type on the paper taking place in' such instance after the shifting movement of the platen is completed.'

I claim as my invention- 1. In a type-writing machine, the combination with the machine-frame, of a papercarriage, a shift-frame on which the aperearriage has endwise movement for etterspacing, and which is movabl'egin thema'- chine-frame to bring the apex' into either one of a plurality of printing positions, and suspension-links or han ers pivoted at their lower ends to the shiftrameV at their upper ends' to the machine-frame and arrange( to afford rising-and-alling movement of the shift-frame as the latter is moved away from and toward one of its printing positions.

2. In a type-writing machine, the combination with the machine-frame and typebars bearing each three types, of a papercarriage, a shift-frame on which the papercarriage is supported and has endwise Inovement for letter-spacing, said shift-frame being movable in opposite directions from a central position to bring the paper into position to receive impressions from either of the three types on the type-bars, and suspensionlinks or hangers pivoted at their lower ends to the shift-frame and at their up er ends the machine-frame and arrange to afford rising-and-falling movement to the shiftframe as the latter is moved in either direction away from and toward its said central position.

3.- The combination with a ty e-Writer frame, of a paper-carriage, a'shiftame on which the paper-carriage has endwise movement for letter-s acing and which is movable on the machinerame to bring the paper into either one of three printing ositi'ons, a universal bar, means for contro ling the letterspacing movements of the' paper-carriage, sus ension-links or hangers connecting,r the shi t-frame with the machine-frame and arranged to afford rising-and-falling movement of the shift-frame as the latter is moved in either direction awa from and toward central position, an( operative connections between said universal bar, and said means tol IOO

its v the carriage, a shift-frame on which the one of three for controlling the letter-spacmg movements of the paper-carriage constructed to maintain constant the relation between saidy universal bar and the carriage-controlling means during the movements of the shift-frame. g

4. The combination -With type-bars, a paper-carriage, a base-plate, standardsonthe base-plate supporting the type-bars above per-carriage has endwiseumovement `for arms on the shift-'frame and to the standards at points above the said arms. Y

5. The combination With a paper-carriage, a shift-frame supporting the same, escapement mechanism for the carriage mounted on ter-spacing and Which is movable Von the maber,- A. D. 1905.

the shift-frame and embracing an oscillating .escapement-lever, means for supporting the shift-frame embracing suspension-links or hangers arranged to give rising-and-falling movement to the shift-frame when it is moved away from and toward its central position, -and means fortransmittingmotion from the universal bar to said -escapementlever, embracing a slotted'yoke'and pin, the` slot in the yoke being curved to compensate' for the rising-and-fallingvmovement given to the shift-frame by said links or hangers.

In testimony that I claim the foregoing as' my invention I affix my signature, 1n presence of two Witnesses,

l HARRY CROSS,l `Witnesses: i

WM. H. OBRIEN, f F. A. DANIELS.

this'lst day.v of N ovem- 

